When to plant in Fallbrook, CA
USDA Zone 10aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Fallbrook, California — all computed from Fallbrook's nearest NOAA weather station.
A ~-3-day frost-free window makes Fallbrook a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. Zone 10a is warm enough that Fallbrook can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
FALLBROOK 5 NE · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Fallbrook’s own odds, recorded at FALLBROOK 5 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 6 | Feb 7 | Dec 21 | Dec 11 | Jan 1 | Feb 17 |
| 32°F | Feb 24 | Feb 2 | Dec 26 | Dec 23 | Jan 30 | Feb 24 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Fallbrook, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Fallbrook planting FAQ
When is the last spring frost in Fallbrook, CA?
On average, the last spring frost in Fallbrook is around February 2 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Fallbrook, CA?
The first fall frost in Fallbrook typically arrives around January 30 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Fallbrook in?
Fallbrook is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Fallbrook?
There are roughly -3 frost-free days in Fallbrook (a short growing season), running from the average last frost around February 2 to the first fall frost near January 30.
When should I plant tomatoes in Fallbrook?
In Fallbrook, start tomato seeds indoors around December 8–December 22, then transplant seedlings outdoors around February 9 once the danger of frost has passed.
Never miss a window in Fallbrook
An email when it’s time to start seeds, transplant, and sow — timed to Fallbrook’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Temecula · 16 km
- Oceanside · 18 km
- Vista · 21 km
- Murrieta · 22 km
- Camp Pendleton South · 22 km
- Valley Center · 25 km
- French Valley · 27 km
- Wildomar · 27 km
Frost dates recorded at FALLBROOK 5 NE, 8 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Fallbrook, CA — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053151. Retrieved from https://blissgarden.com/california/fallbrook.